Home Made Mask

Home made mask with polypropylene ‘shopping bag’ filtration.



In this mask I’ve used an old flannelette shirt, it’s winter and flannel is comfortable and warm against your face, it’s also easy to breathe through.  Keep in mind this mask has a filter, too heavy a material in combination with filter will be difficult to breathe through. Ultimately you can use any fabric, an old T-shirt, pillow cases etc.  The filter material is a re-usable shopping bag or more specifically, a 100% non-woven polypropylene bag, most shopping bags have a tag in them, see that is says 100% polypropylene.

NOTE: You can make this mask without filter as well, just disregard those sections where I have cut and stitched in the green filter.  I have made a version without filter where you can slide a filter in, see bottom of this page for a picture of that version.

The Womens/Teenagers mask worked well for the kids (8yo & 12yo) and fit nicely.

You need 3 patterns all cut from the above links, this example uses a Mens mask.

  1. Cut your filter out of 100% polypropylene shopping bag using the ‘lining fabric’ template which has been cut along the dotted line, you need 2 pieces


2. Cut your inner fabric out of your desired material using the ‘lining fabric’ template with 1/2″ seam allowance, you need 2 pieces, in this example I have cut 2 pieces face to face.


3. Cut your outer fabric out of your desired material using the ‘main fabric’ template with 1″ allowance for cord casing, you need 2 pieces, in this example I have cut 2 pieces at once face to face.


4. Stitch the the filter material to the inner fabric


5. Lay the completed filter/inner fabric face to face and stitch along the rounded section only, make sure to back stitch at each end.


6. Trim the excess seam


7. Hem the opposite edges. The inner fabric/filter is now complete. lets move on to the outer fabric.


8. Mark the seam line on the outer fabric using the same pattern (lining fabric cut along dotted line) you used to cut the filter. Mark both sides leaving the pieces face to face.


9. Stitch the curved section along the seam line you just marked, trim excess material.  Don’t forget to back stitch at the ends.


10. Make a larger hem at the ends by folding along the marked line and stitching, the hem should be large enough for a pencil to slide through.


11. The mask is now ready for final assembly.  Line up the inner and outer face to face and stitch along the straight section first.  Be careful not to stitch and close the elastic allowance! The inner fabric is smaller than the outer so it should fall short and leave the cord allowance sections clear. Stitch along the top as well and trim excess material.
NOTE: Stitch only along the top and bottom, don’t stitch the mask closed along the vertical sections otherwise you won’t be able to turn it inside out!


12. Once stitched together you should still be able to put something right through the center of the mask and through the cord allowance hems.


13. Turn mask inside out and iron the seams flat, warm iron only as polypropylene melts, silk setting is fine on the iron.


14. Feed through your elastics and adjust until comfortable.

Enjoy and stay safe.

Sam M.


Removable filter versIon. 
Disregard instructions where you cut the green filter sections and also where you stitch the green filter to the inner fabric, the rest is the same.  Once complete you can cut a filter piece out of a 100%  non-woven polypropylene bag or even slide in a PM2.5 filter which are available online.

PM2.5 Filter